Lucario appears as an unlockable playable character in Super Smash Bros. Brawl. He can be unlocked by playing 100 Brawl matches, completing every level of Target Smash with one character, or by having him join the party in The Subspace Emissary by clearing The Glacial Peak. His voice clips in this game are provided by Bill Rogers in the English release, who voices Lucario for the television series, and Daisuke Namikawa in Japanese, who provided the voice of the Lucario in the movie Pokémon: Lucario and the Mystery of Mew and the Pokémon Diamond and Pearl seasons of the animated series.

Lucario's attacks and abilities mostly revolve around aura, which increases in power the more damage Lucario takes (though this only applies to attacks that use its aura). His neutral special move is Aura Sphere, in which Lucario charges and throws a ball of aura energy. His side special move is Force Palm, in which Lucario thrusts its hand forward to attack with a burst of energy. His down special move is Double Team, in which Lucario counterattacks an opponent that attacks it. His up special move is ExtremeSpeed, in which Lucario flies in the direction the player inputs. His Final Smash is Aura Storm, in which Lucario leaps into the air and fires a beam down onto the stage.

Lucario is first encountered at the top of The Glacial Peak, where it is balanced on the peak when Meta Knight and the Ice Climbers arrive. Lucario and Meta Knight battle (the player able to control either character), and the loser is turned into a Trophy. The winner revives the loser, and the two shake hands, now allies. However, in its battle with the Great Fox, the Halberd smashes the Great Fox into the mountain, allowing Lucario and Meta Knight to climb aboard the Halberd.

As the two are traveling through the Halberd, Lucario senses Snake's aura from inside his Cardboard Box and exposes him. His cover blown, Snake and Meta Knight are about to fight, but Lucario stops them, sensing the aura of some nearby Primids which they fight instead. As the three travel on they find a room where the Trohpies of Peach and Zelda are being held in cages. Shadow Bugs then appear and take the form of the princesses, which Lucario, Meta Knight and Snake battle. After the clones are defeated the actual Peach and Zelda are freed and left in the room while the group travels on. They arrive at the bridge, where they find multiple Mr. Game & Watches controlling the ship. Snake knocks them all onto the main deck, where they dissolve into Shadow Bugs and reform into Duon. Snake and Lucario leap down onto the deck, teaming up with Sheik, Peach, Fox, and Falco to fight. After it is defeated, Duon dissolves to reveal the actual Mr. Game & Watch's trophy, which Peach restores.

The Halberd lands in the desert, where most of the cast units. They all then fight against the Subspace Gunship and make it to Subspace. Inside, the team stand against Tabuu, but are all instantly turned into Trophies. However, they are all eventually restored and head to face Tabuu. After he is defeated, everyone returns to the real world, the Subspace portals all closed.

Lucario returns as a playable character in Super Smash Bros. for Nintendo 3DS / Wii U. In English, he is now voiced by Sean Schemmel, who voiced the Lucario in the English version of Lucario and the Mystery of Mew. He retains all of his special moves, as well as the aura mechanic, which has been made more powerful and now affects all of its attacks. His Final Smash is now Mega Evolution, in which Lucario temporarily Mega Evolves, increasing the power of his aura to maximum.

An Aura Pokémon. It can track energy called Aura, which is given off by all living creatures. It's a unique combination of both Fighting- and Steel-type Pokémon. Lucario evolves from Riolu during the day if its happiness has reached a certain point. It specializes in attacks that use Aura energy, like Dark Pulse and a can't-miss technique, Aura Sphere.

Aura Storm

WiiSuper Smash Bros. Brawl

Lucario's Final Smash. After flying off the screen, Lucario reappears in its center. It then launches a powerful Aura attack against all foes within a certain distance. The key to this attack is the ability to change its angle--it's a must to sweep slowly left and right to hit selected enemies multiple times. The last blow will send the victim flying away.

Mei Ling: I guess you could call it his life force. Lucario can use his own Aura and turn it into power. Every time Lucario's damage increases, his Aura gains strength, making his attacks more powerful. So don't think you've got him beat just because his health is down.

Snake: The cornered rat will bite the cat... Sounds like trouble.

Mei Ling: Hey! When did you become so good with proverbs?!

Snake: You must have rubbed off on me.

Mei Ling: Well, come back in one piece, and I'll teach you all the Chinese proverbs you can handle.

A Fighting/Steel-type Pokémon that excels in combat through the reading and manipulation of Aura. As Lucario takes more damage, its attacks grow in strength. At maximum power, Lucario deals triple damage and its Aura Sphere is particularly devastating! Foes won't even know what hit them!

This Fighting- and Steel-type Pokémon can sense the movements of its enemies using its Aura abilities, and is even said to be able to see enemies when they're invisible. As it takes damage, its attacks grow in strength. At maximum power, its deals triple damage, which can make its Aura Sphere attack a real force to be reckoned with!

Lucario's up special Extreme Speed will send this Pokémon soaring on the path you choose. Lucario flies farther the more damage it's taken. Lucario makes use of its Aura for the side special Force Palm. At extremely close range, Lucario will grab an enemy first, dealing additional damage.

The Extreme Speed up special sends Lucario rushing in your chosen direction, and you can adjust the flight path mid-air. Also, the more damage Lucario takes, the further it will go. For the Force Palm side special, Lucario attacks with its Aura. Using it while close to an enemy adds a grab to the move and deals extra damage.

In Lucario's Final Smash, it Mega Evolves into Mega Lucario. The attacks it can use don't change, but its Aura abilities become more powerful than ever, letting it deal more damage and launch opponents farther. It can also resist being launched by other fighters, but the more attacks it takes, the sooner it will transform back.

For Lucario's Final Smash, it Mega Evolves into Mega Lucario. The attacks it can use don't change, but its Aura abilities become more powerful than ever, letting it deal even more damage and launch opponents even further. It can also resist being launched by other fighters, but the more attacks it takes, the less time the Final Smash lasts.

Blue indicates the Trophy or description is exclusive to the Wii U version.

Lucario can track a form of energy called an aura, given off by all living creatures. Lucario is the only known Fighting- and Steel-type Pokémon and evolves from Riolu during the day when its happiness is high enough. Lucario specializes in attacks that use aura energy, like Dark Pulse, and its can’t-miss move, Aura Sphere.